Device for dry granulation of slag



F. RIEDEL.

DEVICE FOR DRY GRANULATION 0F SLAG.

APPLICATION FILED AUG. 10, I915.

Patented Jan. 17, 1922.

UNITED STATES PATENTMOFFICE.

FRIEDRICH RIEDEL, OF DUISBURG, GERMANY, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE CHEMICAL FOUNDATION, INC., A CORPORATION OF DELAWARE.

I DEVICE FOR DRY GRANULATION OI SLAG.

Specification of Letters Patent.

Patented Jan. 17, 1922.

Application filed August 10, 1915. Serial No. 44,727.

(GR ANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3, 1921, 41 STAT. L, 1813.)

To all whom it may concern: 7 Be it known that I, FRIEDRICH many, a citizen of the German Empire, have invented a certain new and useful Improvement in Device for Dry Granulation of Slag, for which I have filed application for patent in Germany, Aug. 10, 1914, and of which the following is a specification. 10

The present invention relates to a device for dry granulation of slag in which the flowing slag is atomized and thrown against a solid and cooled wall, by means of an air or steam jet.

The present invention has for its objectto improve such devices by the use of a special conduit for the atomizing jet, and by correspondingly shaping the cooling wall in such a manner that the entire cooling wall, is as far as possible, equally utilized, in order to prevent the destruction thereof by. the hot slag jet, and, on the other hand, to increase the cooling and chilling action on the slag material. In accordance with the present invention the above-named object is attained on the one hand by mounting the nozzle carrying the atomizing jet in a swinging manner, and, on the other hand, by making the cooling wall curved.

In the accompanying drawing, one embodiment of the invention has been illustrated, and

Figure 1 shows a side view of partly in section;

Figure 2, a portion of the device in plan view, and

Figure 3, a detail in front view.

The cooling wall A, curved to a circular arc is placed on a platform B, and this wall is constructed as a manifold and cooled by water. C is the slag trough having an outlet 0 and reaching into the chamber formed by the cooling wall A. Directly beneath the outlet 0 of the slag trough is situated an atomizing nozzle E which is connected with the steam or air conduit D. The atomizing nozzle E is by means of a horizontal journal 7 swingingly connected with an arm F so as to swing around a vertical trunnion G in the device such a manner, that the nozzle may be moved E is mounted eccentrically from the central RIEDEL, residing at Duisburg, Furstenstrasse 15, Gerthe rollers 71 of a frame J through the intermediary of an angle iron H, and this frame may be carried along the inner side of the cooling wall A. A scraper i Figures 1 and 3, is provided on the frame J, which scraper is intended to remove the; small slag particles which might adhere to the cooling wall. The movement of the atomizing nozzle E and the scraping device J i 11 may be accomplished by hand, or by machinery, but always in such a manner that the scraping device follows immediately after the slag jet traveling in the horizontal plane.

A collecting funnel L is provided in the bottom of the platform B for collecting the granulated slag falling off the cooling wall A, and from this funnel the slag may be transferred for further preparation, as for instance, in a crushing mill or similar machinery.

A hood K, Figure 1, placed on top of the cylindrically shaped cooling wall serves to carry away the gas and steam resulting from the granulation of the slag.

' The described device, the operation of which needs no further description, possesses the advantage that the atomized slag is not always thrown against the same part of the cooling surface, but that the entire cooling surface is utilized uniformly for atomizing the slag by changing the direction of the jet, and the destruction of the wall is consequently prevented. At the same time, and for this reason, the temperature is held uniformly low in all parts of the cooling wall, which also depends on the removal of an slag parts, that may adhere to the we] through the scraper, so that the slag granu lations may uniformly be transferred into a glass-like condition.

I claim 1. Device for dry granulation of slag comprising a cylindrical cooling wall, an atomizing nozzle, a mounting for said nozzle permitting movement in all directions of said nozzle and means for passing compressed ejecting medium through said nozzle, whereby the molten slag may be thrown in a radial direction at any portion of Said cooling wall.

2. Device for dry granulation of slag comprising a cylindrical cooling wall, an atoing wall.

3. Device for dry granulation of slag comprising an upright cylindrical cooling wall, an atomizin nozzle, a mounting for said nozzle permitting movement of said nozzle in a horizontal and also in a vertical plane, and means for passing compressed ejecting medium through said nozzle in order to intercept and throw a jet of molten material in an approximately horizontal direction against the concave side of the wall, a scraper hung from the edge of said wall,

whereby all adhering particles may be removed from any portion of said wall by passing said scraper along the wall.

41 Device for dry granulation of slag comprising an upright cooling wall, an atomizing nozzle, a mounting for said nozzle per.- mitting movement of said nozzle in a horizontal and also in a vertical lane, and means for passing compressed e ecting 'medium through said nozzle in order to intercept and throw a jet of molten slag against any portion of said wall, a scraper for said wall, a track on the top of said cooling wall and rollers on said scraper engaging said track, whereby upon running said scraper along said track all adhering particles may be removed by said scraper from any portion of said wall.

The foregoing specification signed at Barmen, Germany, this 23rd da of June, 1915.

FRIEDRI H RIEDEL. In presence of- HELEN NUFER, ALBERT Norma. 

